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1. 发明专利

JPH07301279A VIBRATION DAMPING METHOD OF STRUCTURE AND DEVICE THEREFOR 失效
公开(公告)号：JPH07301279A
公开(公告)日：1995-11-14
申请号：JP9626294
申请日：1994-05-10
申请人： NIPPON KOKAN KK
发明人： SHIRAI MASAAKI
IPC分类号： E01D1/00 , E04H9/02 , F16F15/02
摘要： PURPOSE:To improve the extent of reliability and durability in a structure vabration damping device by making a weight perform its low-frequency rocking motion continuously or intermittently in advance, apart from control rocking motion. CONSTITUTION:Each pair of supporters 6 are installed left and right on a weighting table 7. If a weight 1 is made into pendulous motion, an electric motor 12 receives a reactive force provided with a horizontal component in reverse to the displacement of this weight 1 via a speed reducer 11. Likewise, the supporter 6 also receives the reactive force provided with the horizontal component in reverse to the displacement of the weight 1. The reactive force imposed on the motor 12 and the supporter 6 is transmitted to the weighting table 7 of a structure vibration damping device body. The weighting table 7 of the damping device body is clamped to a structure and thereby the pendulous motion of the weight 1 is controlled so as to generate the reactive force provided with the horizontal component in a direction of negating a vibration in the structure, whereby the damping of this structure is well promotable. In addition, since the weight 1 rocks continuously at low frequency, lubricating oil is always fed to both rotational and sliding members supporting the weight 1, so that reliability and durability are thus improvable.

2. 发明专利

JPH06336394A VIBRATION RESTRICTING METHOD FOR OVERHEAD CRANE 失效
公开(公告)号：JPH06336394A
公开(公告)日：1994-12-06
申请号：JP14559893
申请日：1993-05-25
申请人： NIPPON KOKAN KK
发明人： SHIRAI MASAAKI , SEKIGUCHI ISAO
IPC分类号： B66C13/06 , B66C15/00 , F16F15/02
摘要： PURPOSE:To restrict vibration in a higher harmonics mode by providing an active type dynamic vibration reducer and a vibration detector on a movable carriage provided with a lifting mechanism which moved on a girder, and controlling the dynamic vibration reducer based on detection values of vibration detected by the vibration detector. CONSTITUTION:A movable carriage (crab) 20 having a hoisting mechanism 22 to hoist a suspended load 40 through a wire 41 which moves on a girder 10 is provided with an active type dynamic vibration reducer 3 comprising a load mass screwed with a ball screw 32 rotated by a servo motor 31, and an acceleration detector 21 as a vibration detector. In performing inching operation or the like in hoisting the suspended load, vibration acceleration of the girder 10 composing a main vibration system is detected indirectly by the acceleration detector 21, and a speed signal is obtained by an integrator 36 based on its detection signal. This speed signal is sent to a DC amplifier 35, and an amplified signal is applied through a servo driver 34 to the dynamic vibration reducer 3 for driving to generate inertial force in accordance with a vibration speed.

3. 发明专利

JPH0379658B2 失效
公开(公告)号：JPH0379658B2
公开(公告)日：1991-12-19
申请号：JP11956182
申请日：1982-07-09
申请人： NIPPON KOKAN KK
发明人： IKEUCHI AKITAKA , SHIRAI MASAAKI
IPC分类号： G01N3/32 , G01H15/00 , G01H17/00 , G01M7/02

4. 发明专利

JPS63177032A IMPACT TYPE IRREGULAR EXCITATION APPARATUS 失效
公开(公告)号：JPS63177032A
公开(公告)日：1988-07-21
申请号：JP821087
申请日：1987-01-19
申请人： NIPPON KOKAN KK
发明人： SHIRAI MASAAKI , FUJISHIMA TAKASHI
IPC分类号： G01H1/14 , B06B1/00 , G01H17/00 , G01M7/00 , G01M7/02
摘要： PURPOSE:To put an irregular impact excitation method in practice without manual operation and to achieve not only the facilitation of measurement but also measuring accuracy and stability, by driving an exciter on the basis of the signal of a signal generator irregularly generating a pulse like signal. CONSTITUTION:A force detector 8a is mounted to the impact part of the exciter 2 suspended at the position close to a structure 10 being an object to be measured by wires 20 and the force added by the impact of the exciter 2 is detected by said force detector 8a. A signal generator 3 generates an irregular pulse like signal to sent the same to the exciter 2 as an excitation signal. This irregular pulse like signal is passed through a filter to adjust the pulse width thereof to a degree suitable for operating the exciter 2 and imparted to the exciter 2 as an excitation signal. Since the exciter 2 irregularly applies impact to the structure, by measuring the excitation force detected by the force detector 8a and the vibration response (e.g., vibration acceleration) of the structure 10, a frequency response function can be calculated.

5. 发明专利

JPH1151362A DUST REMOVING-MELTING APPARATUS FOR GAS CONTAINING DUST 失效
公开(公告)号：JPH1151362A
公开(公告)日：1999-02-26
申请号：JP20438597
申请日：1997-07-30
申请人： NIPPON KOKAN KK
发明人： SUZUKI MINORU , FUJISAWA YOSHINARI , HAMAGUCHI KEIZO , HOSHINO YASUSHI , OKUYAMA YASUO , SHIRAI MASAAKI , YOSHIKAWA KUNIO
IPC分类号： F23L7/00 , F23G5/00 , F23G7/06 , F23J1/00
摘要： PROBLEM TO BE SOLVED: To recover thermal energy without waste, requiring no specific equipment for ash processing. SOLUTION: An inflow port 12 for gas containing dust is provided at the top of an apparatus, and a pebble filled layer 21 is formed on a lower part of the same, and further a molten slag heat treatment part 40 for molten slag is connected under the filled layer. Further, there is provided a combustion improving burner 13 above the pebble filled layer into which burner a fuel is introduced together with high temperature air or oxygen rich air. Hereby, a double spiral flow is formed.

6. 发明专利

JPS6326440A VIBRATION PROOFING STAY FOR VESSEL 失效
公开(公告)号：JPS6326440A
公开(公告)日：1988-02-04
申请号：JP16989086
申请日：1986-07-21
申请人： NIPPON KOKAN KK
发明人： SHIRAI MASAAKI
IPC分类号： F16F9/19 , B60K5/12 , B63H21/30
摘要： PURPOSE:To obtain sufficient braking force against the engine vibration. by accommodating a piston in a cylinder, in which viscous fluid is enclosed, in such a manner that a clearance is insured between the piston and the inner wall of the cylinder and connecting either one of a cylinder or a piston rod to a marine engine and the other to a hull structure, respectively. CONSTITUTION:A piston, which is connected to a rod 2, is accommodated in a cylinder 1, in which viscous fluid is enclosed. A flange 4, which is used to install the cylinder 1 to a main engine as a marine engine or the engine room, is attached to the left-hand end of the cylinder 1. On the other hand, a side wall 6, which is connected to a flange 5 via a bellows 7, is attached to the right-hand end of the cylinder 1. The piston 3 is formed into a cylindrical shape having a length l and a radius r, while a predetermined amount of clearance epsilonis insured between the piston 3 and the inner wall of the cylinder 2. In addition, the nod 2 penetrates through the side wall 6 of the cylinder 1, keeping the liquid-tight condition.With this contrivance, the reciprocating motion of the piston 3 accompanying the vibration of the marine engine makes the viscous fluid run through the clearance epsilon, thereby generating braking force. Thus, intensity of the engine vibration can be lowered.

7. 发明专利

JPS62261027A SHAKING DEVICE 失效
公开(公告)号：JPS62261027A
公开(公告)日：1987-11-13
申请号：JP10321786
申请日：1986-05-07
申请人： NIPPON KOKAN KK
发明人： SHIRAI MASAAKI
IPC分类号： B06B1/04 , G01M7/00 , G01M7/02
摘要： PURPOSE:To enable an operation to be repeated only by making current flow in the coil of a force releasing device by providing it and, when the tension of a wire exceeds a prescribed value by a force applying device, releasing the tension to vibrate a structure. CONSTITUTION:When a structure 60a is engaged with a wire 1, a force applying device 50 is provided and the coils 4 and 4a of a force releasing device 20 provided between the structure 60a and the device 50 are excited 20, a pair of bobbins 3 and 3a are brought into close contact with each other by the reaction force of a spring 5 and a magnetic force. Thus, since the bobbins 3 and 3a engage wires 1 and 1a via hooks 2 and 2a or a holder 7, respectively, an adherent force between the bobbins 3 and 3a can oppose to the tension (f). Then, when the rotating shaft of the device 50 is rotated, the tension (f) is delivered to the wire 1a. In a range wherein the tension (f) is equal to or smaller than the adherent force determined by an exciting current and the strength of the spring 5, the structure 60a generates displacements X and Y. When the tension (f) feeding the adherent force is applied, an attraction between the bobbins 3 and 3a is instantaneously released, the structure 60 sways in a reverse direction to generate a free vibration, which is then damped.

8. 发明专利

JPS60227135A MEASURING METHOD OF FREQUENCY RESPONSE FUNCTION 失效
公开(公告)号：JPS60227135A
公开(公告)日：1985-11-12
申请号：JP8195984
申请日：1984-04-25
申请人： NIPPON KOKAN KK
发明人： IKEUCHI AKITAKA , SHIRAI MASAAKI
IPC分类号： G01H13/00
摘要： PURPOSE:To improve measurement accuracy by calculating an relation degree function from the vibration response of a body to be measured, increasing the amplitude of the spectrum of an excitation waveform at a frequency at which the degree of relation is low and performing conversion to a new excitation waveform, and exciting the body to be measured and measuring its vibration response. CONSTITUTION:A signal processor 6 outputs a constant-amplitude spectrum and a structure 1 is excited by an exciter 2 fitted through a load meter 4. The vibration response of the structure 1 is measured by a vibration meter 5. The relation degree function is calculated from the measured vibration response and the amplitude of the spectrum of the excitation waveform at the frequency where the degree of relation is low is increased according to the degree of the decrease in the degree of relation. This spectrum is Fourier-transformed reversely and a new excitation waveform is outputted. The structure 1 is excited with this excitation wave form and vibration response is measured. A frequency response function is calculated from the measured vibration response. Thus, an accurate measurement is taken regardless of a resonance point and an anti-resonance point.

9. 发明专利

JPS52110681A APPARATUS FOR OSCILLATION MODE OBSERVATION 失效
公开(公告)号：JPS52110681A
公开(公告)日：1977-09-16
申请号：JP2792276
申请日：1976-03-15
申请人： NIPPON KOKAN KK
发明人： TOKUNAGA TADASHI , SHIRAI MASAAKI
IPC分类号： G01H1/00 , G01H3/00

10. 发明专利

JPH07280029A VIBRATION DAMPING DEVICE OF STRUCTURE 失效
公开(公告)号：JPH07280029A
公开(公告)日：1995-10-27
申请号：JP6731194
申请日：1994-04-05
申请人： NIPPON KOKAN KK
发明人： SHIRAI MASAAKI
IPC分类号： E01D1/00 , E01D11/02 , E01D19/14 , E04H9/02 , F16F15/02
摘要： PURPOSE:To reduce the total height of a vibration damping device body of a structure by receiving the detected signal from a sway detecting sensor to detect the sway of the structure, generating the control signal to sway a weight, and providing a control mechanism to send the control signal to a driving mechanism of the weight. CONSTITUTION:Damping of a structure is realized by the reaction force to be obtained by driving a weight 1 of a vibration damping device body of the structure fixed to the structure by a motor 12. A pillow block 4 is rotated by the inclination of a linear bearing block 3, and the weight 1 achieves the pendulum motion while it is horizontally held. The sway of the pendulum motion is detected by a detecting sensor, and the signal is generated by a phase control mechanism based on the detected sway of the structure, and the driving mechanism is controlled by the generated control signal. This constitution, different from the damping system where the weight 1 is suspended to achieve the pendulum motion, can reduce the total height of the vibration damping device body of the structure.

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